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Updated: Jun 23, 2026

Experimental Methods of Dust Charging and Mobilization on Surfaces with Exposure to Ultraviolet Radiation or Plasmas
Published on: April 3, 2018
Single dust-particle rotation in glow-discharge plasma
V Yu Karasev1, E S Dzlieva, A I Eikhval'd
1Institute of Physics, St. Petersburg State University, Ulianovskaya 1, Peterhof, St. Petersburg, 198504, Russia.
Abstract:
Rotation of a single dust granule (spin) is investigated experimentally in a stratified glow discharge. We employ the technique of measurement of the angular velocity, which is based on coordinate tracing of the light scattered by a hollow transparent particle. The angular velocity measured in the experiment is about 1-2 orders of magnitude higher than observed in previous experiments. We found that the angular velocity depends linearly on the discharge current. The mechanism of rotation of the granule is also described.
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